Sidewalk-pavement door.



narran sTaTns PATENT ortica.

FRANK OBRIEN, HIRAM A. BEALL, CECIL A. CROOK, AND OSCAR- M. BORG, OFSPOKANE, WASHINGTON.

SIDEWALK-PAVEMENT DOOR.

Toscani.

Application filed February 10, 1913.

To all whom may concern.'

vBe it known that we, FRANK OBRIEN, HIRAM A. BEALL, Cnam A. CRooK. andOSCAR M. Bone, citizens of the United States of America, residing atSpokane.l in the county of Spokane and State of Viashington, haveinvented certain new and useful Improvements in Sidewalk-Pavement Doors,of which the following is a specification,

This invention pertains to sidewalk pavement doors and has for itsobject to provide doors suitable for the treading surface of a pavementand such as will have upper surfaces that will not become slippery whenwet by rain or snow.

Sidewalk pavements along business streets of cities are commonly setwith doors leading to vaults or passage ways and excavations beneath. Acommon type of door used for this purpose is a steel door hinged to asidewalk pavement. The steel doors become slippery when wet by rain orfalling snow, making them dangerous for pedestrians to walk upon lestthey slip and fall or strain themselves.

To obviate the dangers mentioned is one of the objects of the inventionas well as to provide a construction that will be light and economical.

We accomplish our purpose by the use of a light metal base with fibrouscovering, the latter serving as the treading surface. The two elementsbeing so connected and united and connected with the pavement or walk asto provide suitable and safe passage for pedestrians over the same.

"We find that we can provide a construction whereby the fibrous coveringcan be attached to the top surface of ordinary steel doors alreadyinstalled in a sidewalk pavement, as to substantially serve the purposesdesired, as well as to manufacture the improved doors outright.

Te have illustrated both methods mentioned in the accompanying drawings,in which Figure 1, is a top plan view of a p'air of doors hinged to afragmental pavement, one of the doors being an ordinary steel doorpreviously installed in the sidewalk pavement with the fibrous coveringsecured thereto, and the other one being a door originally manufacturedaccording to the improved plan, Fig. 2, is a transverse sectional viewtaken on the line 2-2 of Fig. 1, Fig.

Specification of Letters Iatent.

PatentedFeb. 1U. 1914i.

Serial No. 747,415.

8, is an enlarged fragmental sectional view of the door first describedin Fig. l, Fig. 4t. is an enlarged fragmental sectional view of the doorlast. described in Fig. 1.

In the detail description of the parts following, wherein fiber or afibrous covering is referred to. the same may be composed of a mixtureof cotton or other vegetable or animal or mineral fiber, woven orconnected together with cementitious matter composed ofrubber,bituminous or other mineral or vegetable matter. In theillustration shown, whereby we apply the fibrous treading` surface l0 toa steel door alreadv installed in a sidewalk pavement 11, wehhaveprovided a met-al base 12 with an edge terminating in an upwardly andinwardly extending fiange 13 giving a beveled outer surface 14 andproviding a channel 15 into which the edge 16 of the fibrous substance10 extends. This construction protects the edge 16 of the fibroussubstance 10 and provides a suit-able mounting edge for the door and aproper approach to or from the pavement 1l. If thought desirable, theframe 17 supporting the hinges 18 may be sunk into the sidewalk pavement11 sufficiently to bring the upper surface of the fibrous substance 10to a position horizontal with the upper surface of the sidewalk pavement11. The metal base 12 and fibrous substance 10 should then be secured tothe upper surface of the original door 19 by bolts or rivets 2Oextending through the same as shown in Fig. 3. If desired, an eye orsleeve 2l may be adjusted in an opening through the parts 10, 12 and 19andthe bolt or rivet 2O inserted in the same as shown in Fig. 3.

Uien the door is originally manufactured embodying the improvement, asuitable metal base 22 is provided having an upwardly extending marginalportion 23 reaching to a point horizontal with the top surface of thefibrous filling 10 as shown in Fig. 4. The upturned marginal portion 23furnishes a protection for the edge 211 of the fibrous filling 10 aswell as furnishing a suitable marginal connection with the outer frame17 to which the door is hinged and which the door is made to fit. Thefibrous substance 10 and base 22 should beA secured firmly together inhorizontal alinement by some suitable means as by bolts or rivets 25 asshown in Fig. 2.

There may be added to the base 22 upwardly extending parallelstrengthening ribs 26 between which and the marginal portions 23 thenon-slip fibrous covering l0 may be Secured with the upper surfaces ofeach the covering l0, the marginal portion 23 and the ribs 26 on ahorizontal plane.

That we claim is,

l. A sidewalk or pavement door structure comprising in combination, a.door support ing frame, open door frames hinged t0 said supporting frameand each comprising a metallic or composite base, a ibrous coveringthereto and means for rigidly uniting the two parts together and anupwardly eX- tending marginal flange to said metallic or composite baseextending around the same and reaching upwardly to a point horizontalwith the upper surface of the fibrous portion.

2. A sidewalk or pavement door Structure comprising in combination, adoor supporting frame, open door frames hinged to said supporting frameand each comprising a metallic or composite base, an upwardly eX-flange, and composed of a brous substance 35 consisting of a mixture ofcotton or other Vegetable or animal or mineral fiber, woven or cementedtogether.

ln testimony whereof we aliiX our signatures in presence of twowitnesses.

FRANK OBRIEN. HIRAM A. BEALL. CECIL A. CROOK. OSCAR M. BORG.

` Witnesses:

GEO. E. CANFIELD, WILLIAM H. KAYE.

Copies of this patent may be obtained for ve cents each, by'addressingthe Commissioner of Patents. Washington, D. C.

